Income Segregation the US (Richard Florida)

Richard Florida's work in urban renewal and the importance of a "creative class" have always intrigued me. Here Florida tackles the problem of income segregation in the US, where rich and poor live often live in entirely separate worlds:

http://www.theatlanticcities.com/jobs-and-economy/2014/03/us-cities-highest-levels-income-segregation/8632/